surrounding_text_tracker.h | Explore in Territory

// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef UI_BASE_IME_SURROUNDING_TEXT_TRACKER_H_
#define UI_BASE_IME_SURROUNDING_TEXT_TRACKER_H_

#include <deque>
#include <string>
#include <string_view>

#include "base/component_export.h"
#include "base/functional/callback.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "ui/base/ime/text_input_client.h"
#include "ui/gfx/range/range.h"

namespace ui {

struct CompositionText;

// Tracks the surrounding text. Because IMF works in an asynchronous manner,
// there will be timing gap that IM-Engine sends some request to the text input
// client, and the commit is actually notified.
// This class gives it a try to fill the gap by caching and emulating the
// latest surrounding text under the assumption that text editing requests are
// processed in a common manner.
class COMPONENT_EXPORT(UI_BASE_IME) SurroundingTextTracker { … };

}  // namespace ui

#endif  // UI_BASE_IME_SURROUNDING_TEXT_TRACKER_H_
chromium/ui/base/ime/surrounding_text_tracker.h
